Stock-support for boring-machines.



vO. KOSTER.

STOCK SUPPORT FOR BORING MACHINES.

APPLICATION FILED JAN. 22. 1910.

Patented Jan. 23, 1912.

2 SHEETS-SHEET 1.

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COLUMBIA PLANDOKAPH cO-. WASHINGTON, D c.

o. KOSTER. STOCK SUPPORT FOR BORING MACHINES.

AVPPLIGATION FILED JAN. 22, 1910. 1,015,497, Patented Jan. 23, 1912.

2 SHEBTSSHEET 2.

attowma CORNEILIUS KOSTER, OF GRAND RAPIDS, MICHIGAN.

v STOCK-SUIEIEOBT BOB BORING-MACHINES.

Specification of Letters Patent.

Application fi1ed. January 22, 1910. Serial No. 539,612.

To all whom it may concern:

Be it known that I, CoRNmLms Kosrnn, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Stock- Supports for Boring-Machines, of which the following is a specification.

My invention relates to improvements in attachments for use on boring machines, and its objects are: First, to provide an attachment for boring machines, and more especially for boring machines for use in boring chair legs, furniture parts &c., with which any desired angle may be readily attained. Second, to provide such an attachment with which the desired degree of angle may be readily attained, and, third, to provide an attachment of the kind named that may be made to readily approach or recede from the bit of the boring machine. I attain these objects by the mechanism illustrated in the accompanying drawing, in which- Figure 1 is a side elevation of a part of a boring machine with my device in place. Fig. 2 is a plan of the device detached from a boring machine. Fig. 3 is an end elevation of the same. Fig. 4: is a side elevation of the device showing a protractor attached with which to manipulate the stock bed. Fig. 5 is an end view ofthe device with the stock bed removed to show an index for giving the desired angle to the stock bed arms, and Fig. 6 is a sectional elevation of one of the stock bed arms cut off on the line 00 w of Fig. 5, and looking to the left from said line.

Similar letters refer to similar parts throughout the several views.

This device consists of a standard A, mounted on, .or integral with a base A, which is made to slide freely on the machine bed J, and may be held in proper alinement on said bed, by a rib, as J, or any other suitable device, and by any proper form of securing device, as the set screw H In the more simple form of this device I place guides, as a, in position so that a bevel square, as G G, may be placed with which to give the desired angle to the adjustable bed B, as indicated in Fig. 2. This bed is pivotally secured to the standard A by means of a central bolt and thumb screw, as indicated at b, and may be provided with a protractor scale, as B, and a fixed hand or index, as b, by means of which the desired angle of the supporting arms C, to the right or left, may be readily attained, and, it is held to the desired position, when attained, by the proper setting of the thumb screw 1).

The bed C is pivotally secured to the bed B by means of any available form of bolt and set screw, as indicated at I, in such a manner that it may be readily adjusted to any desired angle from the horizontal, as indicated in Fig. 3, and properly secured to the desired position. WVith the better form of attachments I prefer that an index, as shown at I in Fig. 5, be employed to readily determine the exact desired angle of the bed.

The device with which I hold,the stock to be bored is, preferably, made with two walls or sides placed at right angles with each other and securely attached or made inte gral, as indicated at D, and this is pivotally supported at the ends of the arms C so that this portion of the attachment may be readily adjusted vertically, as indicated by the dotted lines in Fig. 1, either up or down. With the cheaper class of machines I provide for holding this angled bed to the desired position by means of a slotted arm, as F, secured to the supporting standard E, as at f, and to the bed D, as at f, but with the better machines I provide a circular brace or indexed protractor, as K, secured to position by a hand screw, as K, passing through the supporting arm C, as indicated in Fig. 4. To

facilitate the use of this device I sometimes place a stop mechanism in the head G in position to act upon the brace K, substantially as indicated in Fig. 6. For this purpose I find that a device in the form of a brake shoe, as indicated edge of the brace K, forced toward the brace by a suit-able spring, as 70, and arranged to be manipulated by a stem and knob, as k, is very effective.

The head 10 may be made to act upon the edge of the brace as a simple friction shoe, or it may be faced with very fine serrations to engage similar serrations, though when such serrations are used they must be so very fine as not to interfere. with placing the brace at any fraction of a degree of angle desired, and even an ordinary pin may be made to bear against the edge of the brace for the purpose stated.

This attachment is not designed exclusively for use upon boring machines, the boring machine head L and the bit Z being Patented Jan. 23,1912.

at is, made to engage the shown only for the the manner of using general class.

In Fig. 4 I have shown a board, M, supported in the bed D in position to be sawed or shaped, as may be desired, it being understood that the bed D may be placed in any desired posit-ion within the scope of the brace K, and the heads B and C may, also,- be adjusted to suit the demands of the occasion when using the device upon a miter saw, a shaping machine or other machine where it may be used, the same as with the boring machine.

N represents a guide secured to the bed D for longitudinal adjustment of the stock, and N represents a like guide or gage for sidewise measurement, while 0 represents a handle with which the entire device may be manipulated from the front when in use upon a miter saw, a shaper &c.

What I claim as new, and desire to secure by Letters Patent of the United States, 1s:

1. An attachment for furniture working machinery consisting of a base made to slide freely on a machine table, a standard connected with said base, a bed pivotally connected with said standard for horizontal adj ustment, a bed pivotally connected with the side of the first named bed for vertical rotary adjustment, supporting arms on the last purpose of illustrating it with machines of this mentioned bed, an angled bed pivotally supthe supporting bed,

ported at the ends of said arms and arranged for vertical rotary adjustment at right angles with the vertical rotary adjustment of its supporting bed and arms, and means for holding the several beds to the desired position.

2. In an attachment for furniture machinery, a slidable base, a standard on said base, a bed pivotally secured to the upper surface of said standard for horizontal rotary adjustment, a bed pivotally supported to the. side of said first named bed for vertical rotary adjustment at right angles with the movements of the first named bed, supporting arms on said bed, an angled bed pivotally supported on said arms for vertical rotary adjustment at right angles wit-h gages connected with said angled bed, and means for securing the several beds and gages to the desired positions.

pivotally secured to 3. In an attachment for furniture machinery, a base slidably secured to the machine bed, a standard on said base, a bed I the upper surface of the standard so that it may be readily adjusted revolubly sidewise, a second bed secured to the side of said bed so that it may be readilymade to revolve for vertical adjust-ment at right angles with the movement of" the first named bed, supporting arms extending from said bed, an angled bed pivotally supported on said arms and arranged for rotaryadjustment at right angles with said second named bed, an indexed brace arranged to support said angled bed in the de sired position.

4. In an attachment for furniture machinery, a base arranged to slide freely on the machine bed, a standard on said base, a bed pivotally secured to the upper surface of the standard and arranged to be given a rotary horizontal adjustment to any desired degree from .the horizontal central movement of the base, an index for determining said angle, a bed pivotally secured to the side of said first named bed and arranged to be given vertical rotary adjustment at right angles with the adjustment of the first named bed, and an index to determine the angle of adjustment, arms projecting from said bed, an angled bed pivotally supported on said arms, an indexed segmental brace secured to said bed and connected with the tion, and a stop mechanism and a bolt for securing said brace to the desired position.

5. In an attachment for furniture machinery, a base and standard, a bed revolubly adjustable thereon upon a horizontal plane, a second bed pivotally secured to the side of said first named bed and revolubly adjustable thereon upon a vertical plane, arms extending fro-m this bed, a bed pivotally secured to said arms and adjustable upon a vertical plane at right angles with the second named bed, and means for scour ing said beds to the desired posit-ions and readily determining the desired angles.

Signed at Grand Rapids Michigan January 14, 1909.

CORNEILIUS KOSTER. In presence of- I. J. CILLEY, FRED B. PARKS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 01' Patents,

Washington, D. 0. i I

arm to secure said bed to the desired posi- I 

